SD1010A Datasheet, PDF (13/45 Pages) List of Unclassifed Manufacturers – Analog-Interface XGA TFT LCD Display Controller

SmartASIC, Inc.
SD1010A
3. FUNCTIONAL DESCRIPTION
The SD1010A has the following major function blocks:
1. Input mode detection and auto calibration block
2. Buffer memory and read/write control block
3. Image scaling, interpolation and dithering block
4. OSD mixer and LCD interface block
5. EEPROM interface block
6. CPU interface block
The following sections will describe the functionality of these blocks.
3.1. Input mode detection & auto calibration block
3.1.1.
Supported input modes
SD1010A can handle up to 14 different input modes. For SD1010A, an input mode is
defined by its horizontal resolution with its vertical resolution. The input modes with
the same horizontal and vertical resolution but with different frame rates are still
considered as one single input mode. In the default EEPROM setup, SD1010A
accepts the following seven input video modes:
1. 640 x 350
2. 640 x 400
3. 720 x 400
4. 640 x 480 (VGA)
5. 800 x 600 (SVGA)
6. 832 x 624 (MAC)
7. 1024 x 768 (XGA)
Users can easily change the definitions of the acceptable input modes by adjusting the
values in the appropriate EEPROM entries. There is no frame rate restriction on the
input modes. However, since the output signal is synchronized with the input signal at
the same refresh rate, the input refresh rate has to be within the acceptable range of
the LCD panel.
The user-defined video modes can be defined by storing appropriate timing
information in the EEPROM. Detail definitions of the EEPROM entries are described
in Section 3.5.2.
November, 1999
SmartASIC Confidential
13
Revision B